Lock and latch



Nov. 13, 1928. 1,691,750

c. R. ALLEY LOCK AND LATCH Filed July 1, 1925 and Patented Nov. 13, 1.92550 hairs r refit;

1,591,750 Flee.

LOCK Ann LATCH.

Application filed July 1,

My invention relates to improvements in locks or latches for doors or closures of all types, and has for its object a lock or latch that can be operated with a minimum of effort, that will automatically lock the door or closure to which it is aflixed when the door is closed, that is capable of being operated as either a simple latch or lock, that is eX- tremely simple in its construction, and will lock the door in such a manner that rattling of the door is eliminated.

To the accomplishment of the foregoing and such other objects as may hereinafter appear, the invention consists in the method and in the means hereinafter particularly described and then sought to be clearly de fined by the claims, reference'being had to 7 the accompanying drawings forming apart hereof, and in which Fig. 1 is a plan view of the lock with the cover, locking sear and sear spring removed;

Fig. 2 is a front elevation, illustrating the locking bolt;

1 Fig. 3 is a rear elevation of the assembled ock;

Fig. 4 is a side elevation of the assembled lock with its cover removed;

Fig. 5 is an elevation of the keeper for the lock and illustrates the position of the bolt with relation to its keeper; and

Fig. 6 is a section through the keeper and illustrates the positions of the bolt when in its extreme forward position, with relation to its keeper, before the bolt passes into the locking position.

The parts of the lock and their operation are as follows When the handle B, Fig. 1, mounted on the shaft H, is rotated in a clockwise direction, the horn 2' on the forked member G, which is fixedly mounted on shaft H, and capable of rocking upon the spring plate J attached to the lock-casing by the stud K, is brought into engagement with the projection F of the bolt body B and fart-her rotation of the handle R, member G'and its horn 2' causes the bolt body to move longitudinally against the spring C until the spring C is compressed, as shown in Fig. 1 and Fig. 4:. The spring plate J will restore the rocking member C to its normal neutral position after being'rocked either to the right or to the left.

The spring C is so mounted with relation to the bolt body B and its projection F, that it exerts a pushing force tending to move the 1925. Serial No. 40,846.

bolt body B forward to'its locking position when the pawl pin E, which is integral with the bolt body B,"is released from its engagement with the latch seatD. Thespring C is also mounted with relation to thebolt body B in such a manner that it exerts a torsional or rotational movement of the bolt body for the purpose of rotating the bolt body B and engaging its pawl-pin E with the latch-seat D to; hold the bolt body in its open position.

If it is desired to operate the device manually tolock the door to which it is attached, the handle R is turned in a counter clockwise direction. This causes a rotation in the same direction of the forked member G and causes the inclined face of the member G to bear against and'raisethe projection F ofthe bolt body B to cause rotation of thelbolt body B against the torsional force of the spring G. l

The rotation of the bolt body B causes the pawl-pin E attached thereto, to rise out of engagement with the latch-seat D and allow spring C to expand and force the bolt body B and the bolt head A, mounted thereon, forward toward and into the bolt head keeper I socket W, at the same time that the bolt body" B and the bolt head Aare rotated through the unwinding of spring C. The normal'position of the bolt head A with relation to the housing of the locking mechanism when the doorto which it is attached is in an open position, is shown in Fig. l and Fig. 4c, the bolt head A being close to the face M of the housing.

Fig. 5 illustrates the position of thekeeper T with relation to the bolt head A immediately prior to the closing of the door to which the lock is attached. When the door is farther closed the face 6 of the bolt head A engages the inclined entrance face 7 of the keeper and as the closing proceeds causes the bolt head A and the bolt body B to rotate.

This rotation of the bolt head A and its body B causes the pawl pin E to rise out of engagement with latch-seat D and allows the spring C to expand and rotate to force the upon the farther closing of the door allows the point p of the bolt head A to pass by the summit 1" of theinclined entrance face 7' of the keeper and allows the spring 0 to lock the bolt head into the keeper socket W by both a forward and twisting motion.

The bolt head A is provided with curved faces m and n that are adapted to engage the curved faces h and g of the keeper socket W, for the purpose of securing a cam action between them and a firmer locking of the door.

Fig. 6 illustrates the position of the keeper T with relation to the bolt head A immediate- .lybefore closing the door when the bolt head A is extended beyond its housing M in the position it would normally occupy in its -iocked position. When the bolt head A and its'keeper '1 are in this relation to one another a nd the door is to be closed, the closing movement of the doorcauses the inclined face a of the bolt head A to engage the inclined face Z) of the keeper T and force the bolt head A and the bolt body 15 backward against the spring C until thepoint 0 of the bolt head A passes by the summit d of the inclined face 5 and allows the spring C to drive the bolt body B and the bolt head A forward into engagement with the keeper socket W to lock the door.

Means for locking the bolt body B and the bolt head A in their forward position are shown in Fig. 4, in which N is a locking member pivoted on a pintle Y and provided with an angular locking arm 8 that is held in engagement with the bolt body B by means of the spring 0.. The bolt body 13 is provided with a transverse slot P adapted to receive the angular locking arm 8 through theme- "dium of the spring 0 when the bolt is in its extreme forward position and lock the bolt body inits' forward position until unlocked by a suitable key.

It will be noted that in my invention one spring is designed to produce twodiii'erent results, one of which is accomplished by the longitudinal movement of its operating spring, and the other by a torque produced by the unwinding of the same spring.

V ment of the various parts but changes may be made therein, and some parts may be omitted or others added, without departing fromes sential featuresof the invention as sought to be defined by the appended claims.

its keeper.

Having thus fully described my invention, what I claim is 1. A lock comprising a rotatable and longitudinally movable bolt, a spring exerting an axial and torsional pressure on the bolt, a latch-seat for securing the bolt in retracted position, said spring exerting its torsional pressure to hold the bolt to its latch-seat, a keeper formed with a cam-surface for coacting contact with the end of the bolt for rotating the bolt to release it from its latch-seat and permit axial projection of the bolt into 2. A lock comprising a rotatable and longitudinally movable bolt, a spring exerting an axial and torsional pressure on the bolt, a latch-seat for securingthe bolt 1n retracted position, a cam-faced head to the bolt, and a keeper formed with cam-surfaces disposed 1n relation to the cam-faces of the'bolt-head for coacting contact therewith to rotate the bolt against the torsional pressure of the spring to release it from its latch-seat to permit axial projection of the bolt into its keeper and rotative movement of the bolt-head into locking engagement with the keeper.

3. A look comprising a rotatable and longitudinally movable bolt, a spring exerting an axial and torsional pressure von the bolt, a

receive the bolt in its projected locking position.

l. A lock comprising a rotatable and longitudinally movable bolt, a spring exerting an axial and torsional pressure on the bolt, a latch-seat for securingthe bolt in retracted position, a manually operablemember disposed in relation to the bolt to release the bolt from its latch-seat in either. of two directions of'movement ofthe manually operable member, means to restore said member to its normal position, anda keeper to receive the bolt in itsprojected locking position. v v

5. A lock comprising a rotatable and longitudinally movable bolt, a spring exerting an axial and torsional pressure. on the bolt, a latchseat for securing the bolt in retracted position, means for releasing the bolt from its securing latch-seat to permit the spring to project the bolt, a keeper to receive the bolt in its projected. locking position, and a key releasable member for locking the bolt against retraction from its projected position.

In testimony whereof I affix, mysignature;

CHARLES R. A LEY; 

